Tube clamp



FIG. 1 is a front elevational view of a tube clamp embodying my new design in the open position;

FIG. 2 is a rear elevational view thereof;

FIG. 3 is a top plan view thereof;

FIG. 4 is a bottom plan view thereof;

FIG. 5 is an end elevational view taken from the left of FIG. 1;

FIG. 6 is an end elevational view taken from the right of FIG. 1;

FIG. 7 is a perspective view thereof;

FIG. 8 is a perspective view thereof in the closed position;

FIG. 9 is a sectional view taken in the direction of the arrows on line IX--IX of FIG. 8;

FIG. 10 is a sectional view taken in the direction of the arrows on line X--X of FIG. 8. 

The ornamental design for a tube clamp, as shown and described. 